RTX Glow (ReShade)

Download the .zip file and extract it, after you extract it you need to open ReShade_Setup_5.8.0.exe. Once you are in the app at the search bar at the bottom type in Portal2, then click on Portal2.exe and press next. Once you are on the blank screen press on browse, once you press browse click on RTX Glow.ini and press ok. Then install it to Portal 2 and open the game, you should see the shaders when ReShade fully loads.